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137 papers · 1 filter
A Semiregularity Map for Modules and Applications to Deformations
Ragnar-Olaf Buchweitz, Hubert Flenner
This paper contains the details and complete proofs of our earlier announcement in math.AG/9907004 . We construct a general semiregularity map for algebraic cycles as asked for by…
Quantum dynamics of charged and neutral magnetic solitons: Spin-charge separation in the one-dimensional Hubbard model
Mona Berciu, Sajeev John
We demonstrate that the Configuration Interaction (CI) Approximation recaptures essential features of the exact (Bethe Ansatz) solution to the 1D Hubbard model. As such, it provide…
Disorder-to-order transition in the magnetic and electronic properties of URh_2Ge_2
S. Suellow, S. A. M. Mentink, T. E. Mason +4
We present a study of annealing effects on the physical properties of tetragonal single--crystalline URh_2Ge_2. This system, which in as-grown form was recently established as the…
Earth Trojan asteroids: A study in support of observational searches
Paul Wiegert, Kimmo Innanen, Seppo Mikkola
Observational searches for asteroids orbiting near Earth's triangular Lagrange points face unique obstacles. A population of such asteroids would occupy a large projected area on t…
A systematic analysis of new physics effects in spin correlations in q qbar to t tbar
T. Torma
I show that there are eight new physics operators that contribute to top pair production and subsequent decay in interference with the leading SM process at the Tevatron and estima…
The Magellanic Stream and the density of coronal gas in the Galactic halo
C. Murali
The properties of the Magellanic Stream constrain the density of coronal gas in the distant Galactic halo. We show that motion through ambient gas can strongly heat Stream clouds,…